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阐明了石英音叉液体密度传感器的工作原理,制备了石英音叉液体密度传感器探头,设计了以AD5933为核心的石英音叉密度传感器的阻抗谱测量系统,主要包括阻抗测量电路、信号调理电路、量程自动切换电路,结合人机交互模块,可以实现参数设置、数据处理和显示。最后测试实验表明,该阻抗谱测量系统具有较高的精度和稳定性。
The working principle of Quartz tuning fork liquid density sensor is expounded and the Quartz tuning fork liquid density sensor probe is prepared. The impedance spectrum measuring system of quartz tuning fork density sensor based on AD5933 is designed, including impedance measuring circuit, signal conditioning circuit, Circuit, combined with human-computer interaction module, can realize parameter setting, data processing and display. The final test shows that the impedance spectroscopy system has high accuracy and stability.